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(No Model.) 1 2 sheets-sheet 1i.

A. MEKELBURG.

PANNINGMILL. N0. 334,183. Patente'd Jan. 12, 1886.

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- A. MEKBLBURG.

PANNING MILL. Y No. 334,183. Patented Jan. l2, 1886.

L lllllllllllllllllnn- UNITED STATES PATENT @Erica AUGUST MEKELBURG, OFMILVAUKEE, VISCONSIN. V

FANNiNe-IVHLL.

SPECIFICATION forming part of Letters Patent No. 334,183, dated Januaryl2, 1886.

Application filed January Q7, 1SS5.

To all whom it may concern:

Be it known that I, AUGUST MEKELBURG, a citizen ofthe United States,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inFanningvMills; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersor figures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in fanningmills for cleaning grain,and pertains to the devices for supporting and shaking the screens, andthe construction of the fan.

In the accompanying drawings, Figure l represents a Side View ot' myimproved mill with the wall of the mill upon the front sideremoved,showing the frame and internal mechanism. Fig. 2 represents anend view from the rear ofthe mill. Fig; 3 is a detail.`

Like parts are represented by the same rel" @rence-letters throughoutthe several views.

In this machine I use two sets of screensan upper set, A, and a lowerset, B-both of which are supported at their respective sides by thevertically-arranged rocking levers C and D. The levers C and D arerespectively centrally pivotcd to the sides ofthe inclosing case orframe by the arms a c operating in the retaining-keepers b b. Thus it isobvious that as the mill is operated the two sets of screens are causedto simultaneously move in opposite directions, the upper set movingtoward the right as the lower set moves toward the left, and thereverse. To the lower end of the lower screen, B, is affixed agrain-board, D', over which the grain passes as it escapes from thescreen without coming in contact with any stationary part of mill,whereby the the clogging of the escaping grain is obviated. The lever Dis made slightly longer than the lever C, and motion is communicated tosuch lever D at its lower end from the crank E through the bar F, leverG, joint-coupling H, bar I, and joint-coupling J. The lever G iscentrally pivoted to the side of the in- Serial No. 154,114. (No model.)

closing wall of the mill by the bracket K and pintle L, upon whichpintle L it is caused to oscillate with each revolution ofthe crank E.To the inner end of the lever G is attached the bar F by a pin, d. Asthe lever G rocks upon the pin L, it communicates a short reciprocatingmotion to the bar F, which motion is communicated to the lever D,causing it to oscillate, as mentioned, upon its central pivotal support,c. The lever D is connected to the lever C at both its upper and lowerends by bars llI M, to which the upper and lower sets of screens arerespectively attached. Thus it is obvious that as the mill is operatedmotion is communicated from the crank of the fan shaft through themechanism described, causing the two sets of screens to besimultaneously oscillated in opposite directions.

To the upper end of the shoe ofthe upper set of screens is attached aseries of metallic rods or fingers, O O, by means of hand-screws, I),(one of which only is shown in Fig. 1,) which screws pass down throughthe grain-board R and engages in the recesses S S of theconnecting-plate T of said lingers, whereby said fingers are held inplace beneath the mouth of the hopper. The oflice of the series ofiingers O O is to catch and screen from the grain the straws and othercoarse foreign substances.`

To increase the capacity of the fans and the volume ofthe air-blast ofthe mill, and to give it a more direct and central course through andbeneath the screens, I have substituted the angularly-arranged blades W'W' W NV for the flat blades heretofore used. The blades WV are connectedto the shaft Y by arms A and B by nails or screws in the ordinarymanner. The diverging edges of the blades are affixed to the innersurfaces of the outer arms, A', and their converging edges unite uponthe outer surfaces of the central arms, B, as shown in Fig. 2. Inoperating the mill, the diverging edges of the blades thus united movein advance or precede the converging edges in the direction indicated bythe arrows, as Shown in Fig. 1.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

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l. In a farming-mill, the combination ofthe series of screens A and B,connectinglevers C and D, central pivotal bearings, a a.,screensuppcrting bars M M, bar F, lever G, bar I, crank E, and shaftY,substantially as set forth.

2. In a fanningmill, the combination of the two series of screens A andB, levers C and D, supporting-arms a a., retaining-clasps b b, bars M M,connected at their respective ends to said levers C and D, bar F, leverG, bracket K, pin L, coupling-joint II, rod I, couplingjoint .I crank E,and shaft Y, substantially as and for the purpose specified.

3. In afannngmill, the combination ofthe fan-shaft Y, radial end arms7A', radial central arms, B', and angular radial blades W, said blades Wbeing respectively formed in two parts, limiting centrally in a radialline upon said central radial arms and diverging outwardly and securedat or near their outer ends to said radial end arms, substantially asand for the purpose specified.

4. In a fauning-mill, the combination of the two series of screens A andB, connecting-le vers C and D, supporting-arms a a, and mechanism foroperating the levers C and D, and thereby reciprocating said screenshorizontally in opposite directions, substantially .as and for thepurpose set forth.

In testimony whereof I affix my signature in presence ot' two witnesses.

AUGUST MEKELBURG.

Witnesses:

GT. BENEDICT, JAs. B. ERWIN.

